1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
//===-- RISCV.td - Describe the RISCV Target Machine -------*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
include "llvm/Target/Target.td"
//===----------------------------------------------------------------------===//
// RISC-V subtarget features and instruction predicates.
//===----------------------------------------------------------------------===//
def FeatureStdExtM
: SubtargetFeature<"m", "HasStdExtM", "true",
"'M' (Integer Multiplication and Division)">;
def HasStdExtM : Predicate<"Subtarget->hasStdExtM()">,
AssemblerPredicate<(all_of FeatureStdExtM),
"'M' (Integer Multiplication and Division)">;
def FeatureStdExtA
: SubtargetFeature<"a", "HasStdExtA", "true",
"'A' (Atomic Instructions)">;
def HasStdExtA : Predicate<"Subtarget->hasStdExtA()">,
AssemblerPredicate<(all_of FeatureStdExtA),
"'A' (Atomic Instructions)">;
def FeatureStdExtF
: SubtargetFeature<"f", "HasStdExtF", "true",
"'F' (Single-Precision Floating-Point)">;
def HasStdExtF : Predicate<"Subtarget->hasStdExtF()">,
AssemblerPredicate<(all_of FeatureStdExtF),
"'F' (Single-Precision Floating-Point)">;
def FeatureStdExtD
: SubtargetFeature<"d", "HasStdExtD", "true",
"'D' (Double-Precision Floating-Point)",
[FeatureStdExtF]>;
def HasStdExtD : Predicate<"Subtarget->hasStdExtD()">,
AssemblerPredicate<(all_of FeatureStdExtD),
"'D' (Double-Precision Floating-Point)">;
def FeatureExtZfh
: SubtargetFeature<"experimental-zfh", "HasStdExtZfh", "true",
"'Zfh' (Half-Precision Floating-Point)",
[FeatureStdExtF]>;
def HasStdExtZfh : Predicate<"Subtarget->hasStdExtZfh()">,
AssemblerPredicate<(all_of FeatureExtZfh),
"'Zfh' (Half-Precision Floating-Point)">;
def FeatureStdExtC
: SubtargetFeature<"c", "HasStdExtC", "true",
"'C' (Compressed Instructions)">;
def HasStdExtC : Predicate<"Subtarget->hasStdExtC()">,
AssemblerPredicate<(all_of FeatureStdExtC),
"'C' (Compressed Instructions)">;
def FeatureExtZba
: SubtargetFeature<"experimental-zba", "HasStdExtZba", "true",
"'Zba' (Address calculation 'B' Instructions)">;
def HasStdExtZba : Predicate<"Subtarget->hasStdExtZba()">,
AssemblerPredicate<(all_of FeatureExtZba),
"'Zba' (Address calculation 'B' Instructions)">;
def NotHasStdExtZba : Predicate<"!Subtarget->hasStdExtZba()">;
def FeatureExtZbb
: SubtargetFeature<"experimental-zbb", "HasStdExtZbb", "true",
"'Zbb' (Base 'B' Instructions)">;
def HasStdExtZbb : Predicate<"Subtarget->hasStdExtZbb()">,
AssemblerPredicate<(all_of FeatureExtZbb),
"'Zbb' (Base 'B' Instructions)">;
def FeatureExtZbc
: SubtargetFeature<"experimental-zbc", "HasStdExtZbc", "true",
"'Zbc' (Carry-Less 'B' Instructions)">;
def HasStdExtZbc : Predicate<"Subtarget->hasStdExtZbc()">,
AssemblerPredicate<(all_of FeatureExtZbc),
"'Zbc' (Carry-Less 'B' Instructions)">;
def FeatureExtZbe
: SubtargetFeature<"experimental-zbe", "HasStdExtZbe", "true",
"'Zbe' (Extract-Deposit 'B' Instructions)">;
def HasStdExtZbe : Predicate<"Subtarget->hasStdExtZbe()">,
AssemblerPredicate<(all_of FeatureExtZbe),
"'Zbe' (Extract-Deposit 'B' Instructions)">;
def FeatureExtZbf
: SubtargetFeature<"experimental-zbf", "HasStdExtZbf", "true",
"'Zbf' (Bit-Field 'B' Instructions)">;
def HasStdExtZbf : Predicate<"Subtarget->hasStdExtZbf()">,
AssemblerPredicate<(all_of FeatureExtZbf),
"'Zbf' (Bit-Field 'B' Instructions)">;
def FeatureExtZbm
: SubtargetFeature<"experimental-zbm", "HasStdExtZbm", "true",
"'Zbm' (Matrix 'B' Instructions)">;
def HasStdExtZbm : Predicate<"Subtarget->hasStdExtZbm()">,
AssemblerPredicate<(all_of FeatureExtZbm),
"'Zbm' (Matrix 'B' Instructions)">;
def FeatureExtZbp
: SubtargetFeature<"experimental-zbp", "HasStdExtZbp", "true",
"'Zbp' (Permutation 'B' Instructions)">;
def HasStdExtZbp : Predicate<"Subtarget->hasStdExtZbp()">,
AssemblerPredicate<(all_of FeatureExtZbp),
"'Zbp' (Permutation 'B' Instructions)">;
def FeatureExtZbr
: SubtargetFeature<"experimental-zbr", "HasStdExtZbr", "true",
"'Zbr' (Polynomial Reduction 'B' Instructions)">;
def HasStdExtZbr : Predicate<"Subtarget->hasStdExtZbr()">,
AssemblerPredicate<(all_of FeatureExtZbr),
"'Zbr' (Polynomial Reduction 'B' Instructions)">;
def FeatureExtZbs
: SubtargetFeature<"experimental-zbs", "HasStdExtZbs", "true",
"'Zbs' (Single-Bit 'B' Instructions)">;
def HasStdExtZbs : Predicate<"Subtarget->hasStdExtZbs()">,
AssemblerPredicate<(all_of FeatureExtZbs),
"'Zbs' (Single-Bit 'B' Instructions)">;
def FeatureExtZbt
: SubtargetFeature<"experimental-zbt", "HasStdExtZbt", "true",
"'Zbt' (Ternary 'B' Instructions)">;
def HasStdExtZbt : Predicate<"Subtarget->hasStdExtZbt()">,
AssemblerPredicate<(all_of FeatureExtZbt),
"'Zbt' (Ternary 'B' Instructions)">;
// Some instructions belong to both the basic and the permutation
// subextensions. They should be enabled if either has been specified.
def HasStdExtZbbOrZbp
: Predicate<"Subtarget->hasStdExtZbb() || Subtarget->hasStdExtZbp()">,
AssemblerPredicate<(any_of FeatureExtZbb, FeatureExtZbp),
"'Zbb' (Base 'B' Instructions) or "
"'Zbp' (Permutation 'B' Instructions)">;
def FeatureExtZbproposedc
: SubtargetFeature<"experimental-zbproposedc", "HasStdExtZbproposedc", "true",
"'Zbproposedc' (Proposed Compressed 'B' Instructions)">;
def HasStdExtZbproposedc : Predicate<"Subtarget->hasStdExtZbproposedc()">,
AssemblerPredicate<(all_of FeatureExtZbproposedc),
"'Zbproposedc' (Proposed Compressed 'B' Instructions)">;
def FeatureStdExtB
: SubtargetFeature<"experimental-b", "HasStdExtB", "true",
"'B' (Bit Manipulation Instructions)",
[FeatureExtZba,
FeatureExtZbb,
FeatureExtZbc,
FeatureExtZbe,
FeatureExtZbf,
FeatureExtZbm,
FeatureExtZbp,
FeatureExtZbr,
FeatureExtZbs,
FeatureExtZbt]>;
def HasStdExtB : Predicate<"Subtarget->hasStdExtB()">,
AssemblerPredicate<(all_of FeatureStdExtB),
"'B' (Bit Manipulation Instructions)">;
def FeatureNoRVCHints
: SubtargetFeature<"no-rvc-hints", "EnableRVCHintInstrs", "false",
"Disable RVC Hint Instructions.">;
def HasRVCHints : Predicate<"Subtarget->enableRVCHintInstrs()">,
AssemblerPredicate<(all_of(not FeatureNoRVCHints)),
"RVC Hint Instructions">;
def FeatureStdExtV
: SubtargetFeature<"experimental-v", "HasStdExtV", "true",
"'V' (Vector Instructions)">;
def HasStdExtV : Predicate<"Subtarget->hasStdExtV()">,
AssemblerPredicate<(all_of FeatureStdExtV),
"'V' (Vector Instructions)">;
def FeatureStdExtZvlsseg
: SubtargetFeature<"experimental-zvlsseg", "HasStdExtZvlsseg", "true",
"'Zvlsseg' (Vector segment load/store instructions)",
[FeatureStdExtV]>;
def HasStdExtZvlsseg : Predicate<"Subtarget->hasStdExtZvlsseg()">,
AssemblerPredicate<(all_of FeatureStdExtZvlsseg),
"'Zvlsseg' (Vector segment load/store instructions)">;
def FeatureExtZvamo
: SubtargetFeature<"experimental-zvamo", "HasStdExtZvamo", "true",
"'Zvamo'(Vector AMO Operations)",
[FeatureStdExtV]>;
def HasStdExtZvamo : Predicate<"Subtarget->hasStdExtZvamo()">,
AssemblerPredicate<(all_of FeatureExtZvamo),
"'Zvamo'(Vector AMO Operations)">;
def Feature64Bit
: SubtargetFeature<"64bit", "HasRV64", "true", "Implements RV64">;
def IsRV64 : Predicate<"Subtarget->is64Bit()">,
AssemblerPredicate<(all_of Feature64Bit),
"RV64I Base Instruction Set">;
def IsRV32 : Predicate<"!Subtarget->is64Bit()">,
AssemblerPredicate<(all_of (not Feature64Bit)),
"RV32I Base Instruction Set">;
defvar RV32 = DefaultMode;
def RV64 : HwMode<"+64bit">;
def FeatureRV32E
: SubtargetFeature<"e", "IsRV32E", "true",
"Implements RV32E (provides 16 rather than 32 GPRs)">;
def IsRV32E : Predicate<"Subtarget->isRV32E()">,
AssemblerPredicate<(all_of FeatureRV32E)>;
def FeatureRelax
: SubtargetFeature<"relax", "EnableLinkerRelax", "true",
"Enable Linker relaxation.">;
foreach i = {1-31} in
def FeatureReserveX#i :
SubtargetFeature<"reserve-x"#i, "UserReservedRegister[RISCV::X"#i#"]",
"true", "Reserve X"#i>;
def FeatureSaveRestore : SubtargetFeature<"save-restore", "EnableSaveRestore",
"true", "Enable save/restore.">;
//===----------------------------------------------------------------------===//
// Named operands for CSR instructions.
//===----------------------------------------------------------------------===//
include "RISCVSystemOperands.td"
//===----------------------------------------------------------------------===//
// Registers, calling conventions, instruction descriptions.
//===----------------------------------------------------------------------===//
include "RISCVSchedule.td"
include "RISCVRegisterInfo.td"
include "RISCVCallingConv.td"
include "RISCVInstrInfo.td"
include "RISCVRegisterBanks.td"
include "RISCVSchedRocket.td"
include "RISCVSchedSiFive7.td"
//===----------------------------------------------------------------------===//
// RISC-V processors supported.
//===----------------------------------------------------------------------===//
def : ProcessorModel<"generic-rv32", NoSchedModel, []>;
def : ProcessorModel<"generic-rv64", NoSchedModel, [Feature64Bit]>;
def : ProcessorModel<"rocket-rv32", RocketModel, []>;
def : ProcessorModel<"rocket-rv64", RocketModel, [Feature64Bit]>;
def : ProcessorModel<"sifive-7-rv32", SiFive7Model, []>;
def : ProcessorModel<"sifive-7-rv64", SiFive7Model, [Feature64Bit]>;
def : ProcessorModel<"sifive-e31", RocketModel, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-u54", RocketModel, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-e76", SiFive7Model, [FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtC]>;
def : ProcessorModel<"sifive-u74", SiFive7Model, [Feature64Bit,
FeatureStdExtM,
FeatureStdExtA,
FeatureStdExtF,
FeatureStdExtD,
FeatureStdExtC]>;
//===----------------------------------------------------------------------===//
// Define the RISC-V target.
//===----------------------------------------------------------------------===//
def RISCVInstrInfo : InstrInfo {
let guessInstructionProperties = 0;
}
def RISCVAsmParser : AsmParser {
let ShouldEmitMatchRegisterAltName = 1;
let AllowDuplicateRegisterNames = 1;
}
def RISCVAsmWriter : AsmWriter {
int PassSubtarget = 1;
}
def RISCV : Target {
let InstructionSet = RISCVInstrInfo;
let AssemblyParsers = [RISCVAsmParser];
let AssemblyWriters = [RISCVAsmWriter];
let AllowRegisterRenaming = 1;
}
|
